767268421 has 2 divisors, whose sum is σ = 767268422. Its totient is φ = 767268420.

The previous prime is 767268419. The next prime is 767268433. The reversal of 767268421 is 124862767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 704637025 + 62631396 = 26545^2 + 7914^2 .

It is an emirp because it is prime and its reverse (124862767) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 767268421 - 2¹ = 767268419 is a prime.

Together with 767268419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (767268401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383634210 + 383634211.

It is an arithmetic number, because the mean of its divisors is an integer number (383634211).

Almost surely, 2^767268421 is an apocalyptic number.

It is an amenable number.

767268421 is a deficient number, since it is larger than the sum of its proper divisors (1).

767268421 is an equidigital number, since it uses as much as digits as its factorization.

767268421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 767268421 is about 27699.6104846260. The cubic root of 767268421 is about 915.4805207950.

The spelling of 767268421 in words is "seven hundred sixty-seven million, two hundred sixty-eight thousand, four hundred twenty-one".